here is a nested test
\begin{verbatim}
  to be nested to be nested
          to be nested to be nested
to be nested to be nested 
\end{verbatim}
\begin{lstlisting}
    here is some more verbatim
            and a child environment
         something else
                 \begin{myenv}
            shouldn't
       be
                    touched
         \end{myenv}
\end{lstlisting}
after verbatim
